Blooming mill



J. L. ALBIE Z.

BLOOMING MILL.

APPLICATION FILED SEPT. 21. 1920.

Patented Sept. 19,1922.

- and time consuming.

' of the same in relation to the to Y -common center, and, thus,

Patented Sept. 19, 1922.

UNITED STATES JOHN ALBIEZ, or PITTSBURGH, PENNSYLVANIA.

BLOOMING- MILL.

Application filed September 21, 1920. Serial No. 411,742.

To all whom it may concern:

Be it known that I, JoHN L. ALBIEZ, a citizen of the United States, and residing in the-city ofPittsburgh, in the county of Allegheny and State of Pennsylvania, have in-' vented or discovered new, useful, and Improved Blooming Mills, of which the following is a specification.

My invention consists in new and useful improvements in blooming mills used for the breaking down or preliminary reduction of metal blooms.

The present method of breaking down blooms is to passthe same through a. series of two roll blooming. mills, each pass reducing the thickness of the bloom in one direction, and the bloom being. usually turned 90 after each pass. This method of course requires a number of mills, each with its own crew, and the operation is both expensive My object is to provide a single bloom ing mill with which the entire breaking down process can be accomplished, the services of only a single crew being required.

For this purpose. I provide a four roll mill, two of the rolls being horizontal and two Vertical, so that all four rolls work on the bloom at one and the same time.

The rolls are journaled in adjustable bearings so as to be movable in relation to the passes to accomplish the progressive reduction of the bloom.

I provide common, power-actuated means for shifting the rolls so that the adjustment common center may be uniformly accomplished and without requiring the stoppage of the mill.

I prefer to applyrotative power to the two horizontal rolls, and to drive the vertical rolls from the former, allof said rolls being providedwith bevelled gear teeth which intermesh together, thereby distributing the strains and avoiding tortional twists.

Other novel features of construction and arrangement of parts will appear from the following description In the accompanying drawings, which are however merely intended to illustrate the principles of my invention without limiting the scope of the same to the construction shown. Fig. lis an elevation of a bloommg mill embodying the principles of my invention, the same being partially broken away in vertical section to show parts; Fig.

by successive 2 is an end view of the same looking toward the right in Fig. 1, and likewise partially broken away in section, and Fig. 3 is a detail showing the inner face of one of the frame standards. w I

The following is a detailed description of the drawings.

The frame of the mill may be of any convenient construction. For the sake of illustration I have-shown it comprisedof a bed plate A which may be secured on a proper foundation and upon which are slideably mounted a pair of bases B from each of which upwardly ext-end twin standards C. The bases B are fixable in any adjusted position by any convenient means, not shown.

The adjacent faces of each pair of standards C- are channeled to form parallel, vertical edge ribs 1 and the intervening recess or channel 2.

- 3 and 3 represent, respectively, housings slideably mounted between the pairs of standards C, the ends of saidhousings fitting into the channels 2, so that the ribs 1 guide the same in their movements and hold them in place on the standards.

The necks of the upper horizontal roll D are journaled in the housings 3, while the necks 'of the lower horizontal roll D are journaled in the housings v3?.

4 and 4' represent, the housings for the vertical rolls E, respectively:

Said housings are shown provided with inwardlyextending top and bottom portions provided with bearings 5 in which the necks of said vertical rolls are journaled.

Said housings are supported between the pairs of standards C by means of top and bottom cross bars 6 whose ends are horizontally notched or recessed to slidably engage the horizontal ribs 7 in the standards, thereby permitting the rolls E and'E to be shifted horizontally.

f The ends of all of the rolls are provided with deep .bevelled gear teeth which-intermesh so that the rolls rotate in unison, the teeth being of suflicient depth that the rolls maybe shifted to a relatively great degree without destroying the power transmission between the rolls. In the case of the vertical rolls I have shown the gear teeth 8 cut into the material of the roll but in the case i Inside of the gear teeth I prefer to provide' the rolls with bevelled end surfaces which, when the rolls are adjusted for the final pass, bearlightly on each other and thus reduce any edge fins which mayhave been formed on the bloom during-previous passes.

The necks of the two horizontal rolls D and D at one end are provided with large gear wheels 11 of equal diameter which intermesh thus driving the two horizontal rolls in opposite directions at the same speed.

Power from a convenient. source is applied to one or both of said gears 11. V

It isevident that the vertical rolls E and E are driven, in opposite directions to each other, from the horizontal rolls. The bevelledgear connection between the rolls is such that the peripheral speed of all four rolls is the'same.

The tops ofeach pairs of standards C are connected together by cap plates 12 which maybe bolted in place.

The lower housings 3 are supported by the. threadedshafts' 13 whose flat heads are bolted to the under faces of the housings and whose lower ends engage vertical hearing holes 14 inthe bases B. 15 represents a worm gear having a threaded bore by -means of which one of said gears is screwed on each of the shafts 13. Said gears are ,held against vertical movement by means with worms'17 and mesh with the gears 15.

of boxes 16 ecured on the bases B.

'17 is a. s aft horizontally journaled in' bearings 17 on the bases B and provided F represents a reversible electric motor or other source ofpower, so that the shaft 17 maybe rotated to lower roll D.

18 represents a 'vertical shaft at either end of the mill journaled in bearings 19 carried by the standards C. The shaft 17 v is either raise or lower the provided with two bevelled gears 20.meshing with similar gears 21 mounted on the lower ends of the shafts 1-8. The upper ends of the shafts 18 are provided with similar gears 22 which mesh with similar gears 23 on the ends of the shaft 24 horizontally journaled in bearings 25 mounted 'on the cap plates 12. 7 The housings 3 of roll D are suspended by means of screw shafts 26 whose lower ends are provided cut in the under faces of the plates 27 bolted.

with squared heads which seat in recesses to the tops of ,the housings, said shafts ex- 1 tending up through holes in said plates and also through .holes in the cap. plates '12. 1

28 are.worm gears whose threaded bores are screwedonto-the upper endsof the shaf s 26 and which; are'f prevented "from" vertical movementflby boxes-.29 mounted on the cap-- plates -12.v 30 JarG WOJCmSf on the shaft. 24

meshing with said gears 28, whereby: the

the upper horizontal roll D may be raised or-lowered by the proper rotation of the shaft 24.

31 represents threaded shafts rigidly attachedtoand extending horizontally from the housings 4 and 4 and 32 represents worm gears whose threadedbores are screwed on said shafts 31 and which are held from' V horizontal movement by boxes 33 mounted on the standards "C1 The gears 32 are in mesh with worms 34 on the shafts 18, where fore the rolls E and E are shiftable hori zontally by the proper rotation of the shafts 18. v

The gears 20, 21, 22, 23, 15, 28 and 32 and'the worms 17 30 and.34 are so proportioned and assembled that by the rotation of the shaft 17 in the proper direction the four rolls may be moved in unison-away from or toward their common center.

The operation of my improved mill is as follows:

The four rolls are moved away from their common center to the proper degree to 're- U the final pass, as has already been explained, A r

It is evident that iny improved mill makes possible a very substantial economy in equipment and mill space inasmuch as only a single mill is required instead of the series of blooming mills now necessary. Consequently a great s ing, in the number of men used is also eff ected, and further a corresponding saving in the breaking down the blooms.

.Although, for the sake of clearness, ll have minutely described the illustrative emboditime required for ment of the principles of my invention shown in the drawings, I do not wish to limit myself thereby, but claim broadly 1. In a blooming mill, the combination of a pair of horizontal'rolls and pair of vertical rolls disposed in relation to a .common. center, means for applying rotative powerto each of-sard four rolls, and means for shifting said rolls in unison in relation to saidcOmmon center, substantially as described. l

. 2. in a blooming mill, the combination of a pair of horizontal rolls and a pair of vertical rolls disposed inrelation to a common center, means for applying rotative'power 100 I corner fins will be formed on the bloom, but these are not material, and are removed by to each of said four rolls, movable housings for said rolls, and common means for shift ing said housings, whereby said rolls may be moved in unison in relation to said common center, substantially as described.

3. In a blooming mill, the combination of a frame, a pair of horizontal rolls, housings for said horizontal rolls movable in a vertical plane on said frame, a pair of vertical rolls. housings for said vertical rolls movable in a horizontal plane on said frame, means for applying rotative power to each of said four rolls, and common means for moving said rolls in unison in relation to a common center, substantially as described.

4;. In a blooming mill, the combination of a frame. housings in said frame slidable in vertical planes. other housings in said frame slidable in horizontal planes, a pair of horizontal rolls journaled in said first named housings, a pair of vertical rolls journaled in said second named housings, means for applying rotative power to each of said four rolls, and common means for shifting said housings whereby said rolls may be moved in unison in relation to'a common center.

5. In a blooming mill, the combination of a frame, housings in'said frame slidable in vertical planes, other housings in said frame slidable in horizontal planes, a pair of horiin said second named housings,'said rolls being provided with beveled end portions which bear together when the rolls assume their innermost positions, means for applying rotative power to each of said four rolls, and common means for shifting said l1ousings, whereby said rolls may be moved in unison in relation to their common center.

6. In a blooming mill, the combination of a frame, housings in said frame slidable in vertical planes, other housings in said frame slidable in horizontal planes, a pair of horizontal rolls journaled in said first named housings, a pair of vertical rolls journaled in said second named housings, the necks of all of said rolls being provided with beveled gear teeth which intermesh whereby said rolls rotate in unison, means for applying rotative power to one of said pairs of rolls, and common means for sliding said housings whereby said rolls may be shifted in unison in relation to a common center.

Signed at Pittsburgh, Pa., this 11th day of Sept, 1920.

J OHN L. ALBIEZ. 

